Printing Daylight Saving Time by Java8

gistfile1.java

import java.time.LocalDateTime;
import java.time.Month;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.stream.IntStream;

/**
 * Printing Date Time by Java8(Date & Time).
 * 
 * @author tomo
 */
public class DaylightSavingSample {

    public static void main(String[] args) {
        System.out.println(String.format("Testing time is %s", ZonedDateTime.now()));
        DaylightSavingSample instance = new DaylightSavingSample();
        // Daylight Saving Time Start
        System.out.println("----- Daylight Saving Time Start -----");
        instance.printZonedDateTime(LocalDateTime.of(2014, Month.MARCH, 9, 0, 0));
        // Daylight Saving Time End
        System.out.println("----- Daylight Saving Time End   -----");
        instance.printZonedDateTime(LocalDateTime.of(2014, Month.NOVEMBER, 2, 0, 0));
    }

    private void printZonedDateTime(LocalDateTime baseDatetime) {
        ZoneId utcZone = ZoneId.of("UTC");
        ZoneId losZone = ZoneId.of("America/Los_Angeles");
        ZoneId tokyoZone = ZoneId.of("Asia/Tokyo");
        System.out.println(String.format("*** Base Date Time(UTC) is %s ***", DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(baseDatetime), utcZone));
        IntStream.range(0, 24).forEach(i -> {
            LocalDateTime plusHours = baseDatetime.plusHours(i);
            ZonedDateTime utcDatetime = ZonedDateTime.of(plusHours, utcZone);
            ZonedDateTime losDatetime = ZonedDateTime.of(plusHours, losZone);
            ZonedDateTime tokyoDatetime = ZonedDateTime.of(plusHours, tokyoZone);
            String utc = DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(utcDatetime);
            String los = DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(losDatetime);
            String tokyo = DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(tokyoDatetime);
            System.out.println(String.format("UTC:%s, LosAngels:%s, Tokyo:%s", utc, los, tokyo));
        });
    }
}